package demo0428;

import com.Mouse;
import demo0428.Keyboard;
import demo0428.Laptop;

public class Main {
    public static void main(String[] args) {
        Laptop laptop = new Laptop();
        Mouse mouse = new Mouse();
        Keyboard keyboard = new Keyboard();

        laptop.useUSB(mouse);
        laptop.useUSB(keyboard);
    }
}
